emc2104 Standard Microsystems Corp., emc2104 Datasheet

emc2104

Manufacturer Part Number

emc2104

Description

Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown

Manufacturer

Standard Microsystems Corp.

Datasheet

1.EMC2104.pdf (101 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

H&T Electronics

Part Number:

emc2104-BP-TR

Quantity:

580

Company:

H&T Electronics

Part Number:

emc2104-BP-TR

Quantity:

580

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PRODUCT FEATURES

General Description

The EMC2104 is an SMBus compliant fan controller with

up to five (up to 4 external and 1 internal) temperature

channels. The fan drivers can be operated using two

methods each with two modes. The methods include an

RPM based Fan Speed Control Algorithm and a direct

drive setting. The modes include manually programming

the desired settings or using the internal programmable

temperature look-up table to select the desired setting

based on measured temperature.

The temperature monitors offer 1°C accuracy (for

external diodes) with sophisticated features to reduce

errors introduced by series resistance and beta variation

of substrate thermal diode transistors commonly found

in processors.

The EMC2104 also includes a hardware programmable

temperature limit

output for thermal protection of critical circuitry.

Applications

SMSC EMC2104

Notebook Computers

Embedded Applications

Projectors

Industrial and Networking Equipment

and dedicated system shutdown

DATASHEET

Dual RPM-Based PWM Fan

Controller with Hardware

Thermal Shutdown

Features

Two Programmable Fan Control circuits.

RPM based fan control algorithm

Temperature Look-Up Table

Up to Four External Temperature Channels

Up to three thermistor compatible voltage inputs

Hardware Programmable Thermal Shutdown

Programmable High and Low Limits for all channels

3.3V Supply Voltage

SMBus 2.0 Compliant

Available in 20-pin QFN Package - Lead Free RoHS

— 4-wire fan compatible

— High speed PWM (26khz)

— Low speed PWM (9.5Hz - 2240Hz)

— Optional detection of aging fans

— 2% accuracy from 500RPM to 16k RPM

— Allows programmed fan response to temperature

— 1 to 4 thermal zones to control each fan driver

— Controls fan speed or drive setting

— Allows externally generated temperature data to control

— Designed to support 45nm, 60nm, and 90nm CPUs

— Automatically detects and supports CPUs requiring the

— Resistance error correction

— 1°C accurate (60°C to 100°C)

— 0.125°C resolution

— Detects fan aging and variation

Temperature

— Cannot be altered by software

— 60°C to 122°C Range or 92°C to 154°C Range

— SMBus Alert compatible

compliant (4mm x 4mm)

EMC2104

fan drivers including two DTS channels

BJT or Transistor models

Revision 1.74 (05-08-08)

Datasheet

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